Warp-knitted Fabric of Filament and short staple composite yarn and preparation method thereof

ABSTRACT

The present invention discloses a warp-knitted fabric of filament and short staple composite yarn and a preparation method thereof. The warp-knitted fabric of filament and short staple composite yarn is prepared by the corresponding preparation method for the warp-knitted fabric of filament and short staple composite yarn. The preparation method for the warp-knitted fabric of filament and short staple composite yarn has excellent weavability, and can effectively prepare the warp-knitted fabric which is high in size stability, is soft, has high elasticity, is wrinkle-resistant and has an excellent hand feeling and comfort. Moreover, in the preparation method, soluble fiber filaments can be added to prepare a warp-knitted fabric or a 3D interval warp-knitted fabric which is partially or entirely formed by 100% short staple yarns; and low-melting-point filaments can also be added to prepare a warp-knitted fabric which can be randomly cut and has no edge curling variation.

BACKGROUND OF THE INVENTION

The present invention relates to the technical field of a warp-knitted fabric, and particularly relates to a warp-knitted fabric of filament and short staple composite yarn and a preparation method thereof.

A warp-knitted product is a knitted fabric formed by simultaneously knitting, looping and intermeshing one or more groups of warp yarns on a warp knitting machine. In such knitted fabrics, each yarn in one group of warp yarns only forms one or two loops in one loop course, and then forms a loop in a next course; and the loops formed by one yarn are configured along the warp direction of the knitted fabric.

Wherein, the warp-knitted fabric has huge differences from a woven fabric and a weft-knitted fabric; the weft-knitted fabric is of a loop structure, so that the weft-knitted fabric belongs to a knitted product and has the characteristics of softness, good extensibility and elasticity, but yarns are looped crosswise, so that transverse extensibility and longitudinal extensibility are greatly different, the anisotropism is obvious, and the transverse size is poor in stability; and due to warp and weft weaving, the woven fabric is high in size stability and strength, but the woven fabric is not soft, is poor in extensibility and is easy to wrinkle. In the warp knitting process, yarns are looped in different transverse loops, so that the fabric is high in size stability and meanwhile, is soft, has high elasticity and is wrinkle-resistant. The warp-knitted fabric is an intermediate product between a woven product and a weft-knitted product.

The warp-knitted fabric is produced by a looping knitting machine belonging to a high-speed looping knitting machine, thus the warp-knitted fabric has high requirements on strength, evenness and hairness of yarns. Currently, raw production materials of warp knitting machines all adopt chemical fiber filaments, so that weaving requirements of a weaving machine can be met.

However, as the requirements for fashion and comfort increase, the market has higher and higher requirements for short staple yarns of the warp-knitted product; and short staples include natural fibers of cotton, hemp and wool, chemical short staples and the like, thus have an excellent hand feeling and comfort. Some users need a partial short staple hand feeling, and some users need a complete short staple hand feeling; and meanwhile, for a three-dimensional (3D) interval warp-knitted fabric with a certain thickness, the trend of applying the short staples is also put forward.

BRIEF SUMMARY OF THE INVENTION

The present invention aims to provide a preparation method for a warp-knitted fabric of filament and short staple composite yarn. The preparation method for the warp-knitted fabric of filament and short staple composite yarn has excellent weavability, and can effectively prepare a warp-knitted fabric which is high in size stability, is soft, has high elasticity, is wrinkle-resistant and has an excellent hand feeling and comfort. Moreover, in the preparation method, soluble fiber filaments can be added to prepare a warp-knitted fabric or a 3D interval warp-knitted fabric which is partially or entirely formed by 100% short staple yarns, and low-melting-point filaments also can be added to prepare a warp-knitted fabric or a 3D interval warp-knitted fabric which can be randomly cut and has no edge curling variation.

The present invention additionally aims to provide a warp-knitted fabric of filament and short staple composite yarn. The warp-knitted fabric of filament and short staple composite yarn can effectively combine performance advantages of short staples and chemical fiber filaments together, is high in size stability, soft, high in elasticity and wrinkle-resistant and has an excellent hand feeling and comfort.

In order to fulfill the aims, the present invention is accomplished by the following technical solution.

The preparation method for the warp-knitted fabric of filament and short staple composite yarn includes the following specific process steps:

1, selecting chemical fiber filaments and short staples, and carrying out composite molding to the chemical fiber filaments and the short staples to form composite yarns, wherein the composite yarns are doubled and twisted threads of the chemical fiber filaments and the short staples or core spun yarns of the chemical fiber filaments and the short staples or siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on a spinning frame;

2, feeding the composite yarns into a warping machine for warping;

3, feeding the beamed composite yarns into a warp knitting machine for warp-knitting weaving, and processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is warp-knitted fabric greige or 3D interval warp-knitted fabric greige;

4, dyeing and finishing the warp-knitted fabric greige; and

5, setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric.

Where, the chemical fiber filaments are water-soluble Poly Vinyl Alcoho (PVA) filaments or soluble polyester filaments, and the preparation method for warp- knitted fabric of filament and short staple composite yarn includes the following specific process steps:

1, selecting the chemical fiber filaments and the short staples, and carrying out composite forming to the chemical fiber filaments and the short staples to form the composite yarns, wherein the composite yarns are the doubled and twisted threads of the chemical fiber filaments and the short staples or the core spun yarns of the chemical fiber filaments and the short staples or the siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on the spinning frame;

2, feeding the composite yarns into the warping machine for warping;

3, feeding the beamed composite yarns into the warp knitting machine for warp-knitting weaving, and processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is warp-knitted fabric greige or 3D interval warp-knitted fabric greige;

4, for the warp-knitted fabric greige using the water-soluble PVA filaments as the chemical fiber filaments, placing the warp-knitted fabric greige into hot water to dissolve the soluble PVA filaments, and for the warp-knitted fabric greige using the soluble polyester filaments as the chemical fiber filaments, placing the warp-knitted fabric greige into alkaline solution to dissolve the soluble polyester filaments;

5, dyeing and finishing the warp-knitted fabric greige subjected to dissolution processing; and

6, setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric.

Where, the chemical fiber filaments are low-melting-point filaments, the warp-knitted fabric of filament and short staple composite yarn is a fabric capable of being randomly cut and knitted, and the preparation method for warp-knitted fabric of filament and short staple composite yarn includes the following specific process steps:

1, selecting the chemical fiber filaments and the short staples, and carrying out composite forming to the chemical fiber filaments and the short staples to form the composite yarns, wherein the composite yarns are the doubled and twisted threads of the chemical fiber filaments and the short staples or the core spun yarns of the chemical fiber filaments and the short staples or the siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on the spinning frame;

2, feeding the composite yarns into the warping machine to for warping;

3, feeding the beamed composite yarns into the warp knitting machine for warp-knitting weaving, and processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is warp-knitted fabric greige or 3D interval warp-knitted fabric greige;

4, dyeing and finishing the warp-knitted fabric greige; and

5, heat-setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric.

Where, the chemical fiber filaments are natural fiber silk, rayon adhesive filaments, synthetic polyester filaments or synthetic polyamide filaments.

Where, the short staples are natural short staples or chemical short staples.

Provided is a warp-knitted fabric of filament and short staple composite yarn which is prepared according to the preparation method according to claims.

The present invention has the beneficial effects that: according to the warp-knitted fabric of filament and short staple composite yarn and the preparation method thereof disclosed by the present invention, the warp-knitted fabric of filament and short staple composite yarn is prepared by the corresponding preparation method for the warp-knitted fabric of filament and short staple composite yarn ; the preparation method for the warp-knitted fabric of filament and short staple composite yarn has excellent weavability, and can effectively prepare the warp-knitted fabric which is high in size stability, is soft, has high elasticity, is wrinkle-resistant and has an excellent hand feeling and comfort; moreover, in the preparation method, the soluble fiber filaments can be added to prepare a warp-knitted fabric or a 3D interval warp-knitted fabric which is partially or entirely formed by 100% short staple yarns; and low-melting-point filaments also can be added to prepare a warp-knitted fabric which can be randomly cut and has no edge curling variation.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be described below in connection with accompanying drawings, but the embodiments illustrated in the accompanying drawings should not be constructed as limiting the present invention.

FIG. 1 is a flow chart of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention will be illustrated below in connection with specific embodiments.

A first embodiment relates to a warp-knitted fabric prepared from water-soluble Poly Vinyl Alcoho (PVA) filament and cotton composite yarns and Poly Butylene Terephthalate (PBT). A preparation method of the warp-knitted fabric includes the following specific process steps:

1, doubling 30 D water-soluble PVA filaments and NE80 cotton yarns and preparing the same into composite yarns so as to improve strength of the yarns and improve weaving performance;

2, feeding the composite yarns and the 50 DPBT into a warping machine for warping;

3, feeding the composite yarns and the 50 DPBT into a KS3-type tricot warp knitting machine to prepare warp-knitted fabric greige;

4, placing the warp-knitted fabric greige into hot water to dissolve the soluble PVA filaments so as to obtain warp-knitted fabric greige of which the fabric surface is 100% cotton, wherein content of the cotton and the PBT in the warp-knitted fabric greige is 67.2% and 32.8%, respectively, and the gram weight of the warp-knitted fabric greige is 240 g/m2;

5, dyeing and finishing the warp-knitted fabric greige subjected to dissolution processing; and

6, setting the dyed and finished warp-knitted fabric greige so as to complete preparation of the warp-knitted fabric, wherein stitches of the warp-knitted fabric are satin tricot stitches.

The warp-knitted fabric has comfort of an all-elastic fabric, appearance of all-cotton and woven fabrics and softness of a knitted fabric.

A second embodiment relates to a warp-knitted fabric prepared from water-soluble polyester filament and cotton composite yarns and PBT. A preparation method of the warp-knitted fabric includes the following specific process steps:

1, doubling 30 D water-soluble polyester filaments and NE80 cotton yarns and preparing the same into composite yarns so as to improve strength of the yarns and improve weaving performance;

2, feeding the composite yarns and the 50 DPBT into the warping machine for warping;

3, feeding the composite yarns and the 50 DPBT into the KS3-type tricot warp knitting machine to prepare warp-knitted fabric greige;

4, placing the warp-knitted fabric greige into alkaline solution to dissolve the soluble polyester filaments so as to obtain warp-knitted fabric greige of which the fabric surface is 100% cotton, wherein content of the cotton and the PBT in the warp-knitted fabric greige is 67.2% and 32.8%, respectively, and the gram weight of the warp-knitted fabric greige is 240 g/m2;

5, carrying out dyeing and finishing processing on the warp-knitted fabric greige subjected to dissolution processing; and

6, setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric, wherein stitches of the warp-knitted fabric are satin tricot stitches.

The warp-knitted fabric has comfort of an all-elastic fabric, appearance of the all-cotton and woven fabrics and softness of the knitted fabric.

A third embodiment relates to a warp-knitted fabric which adopts low-melting-point spandex and can be randomly cut. A preparation method of the warp-knitted fabric includes the following specific process steps:

1, carrying out composite forming to synthetic polyester filaments and natural short staple cotton to form composite yarns, wherein the composite yarns are siro-fil covered yarns directly formed by the synthetic polyester filaments and the natural short staple cotton on a spinning frame, and are 50 s yarns, and the specification of the polyester filaments is 30 D/24 f;

2, warping the composite yarns;

3, feeding the warped composite yarns into the KS3-type tricot warp knitting machine for warp-knitting weaving, simultaneously feeding low-melting-point spandex fibers, processing and producing warp-knitted fabric greige, wherein content of the synthetic polyester filaments in the warp-knitted fabric greige is 32%, content of the natural short staple cotton in the warp-knitted fabric greige is 65%, content of the spandex fibers in the warp-knitted fabric greige is 3%, stitches of the warp-knitted fabric greige are tricot stitches, and the gram weight of the warp-knitted fabric greige is 150 g/m2;

4 dyeing and finishing the warp-knitted fabric greige; and

5, setting the dyed and finished warp-knitted fabric greige at a heat-setting temperature of 130 DEG C, carrying out point-like melting on the low-melting-point spandex to form bonding points so as to form a fabric which can be randomly cut.

The cotton and polyester filament composite yarn spandex all-elastic fabric is a fabric capable of being randomly cut, which has comfort of an all-elastic fabric, appearance of the woven fabric and softness of the knitted fabric.

A fourth embodiment relates to a polyester filament and cotton composite yarn 3D interval warp-knitted fabric. A preparation method of the 3D interval warp-knitted fabric includes the following specific process steps:

1, doubling 30 D polyester filaments and 50 S cotton yarns to prepare composite yarns so as to improve strength of the yarns and improve weaving performance;

2, warping the composite yarns and 40 D polyamide-6 monofilaments;

3, feeding the warped composite yarns and 40 D polyamide-6 monofilaments into an RD4N double tricot machine for warp-knitting weaving, and processing and producing 3D interval warp-knitted fabric greige, wherein content of the 30 D polyester filaments, the 50 S cotton yarns and the 40 D polyamide-6 monofilaments in the 3D interval warp-knitted fabric greige is 15%, 61% and 24%, respectively, and the gram weight of the 3D interval warp-knitted fabric greige is 250 g/m2;

4, dyeing and finishing the 3D interval warp-knitted fabric greige; and

5, setting the dyed and finished 3D interval warp-knitted fabric greige so as to complete the preparation of the cotton-containing 3D interval warp-knitted fabric.

Both surfaces of the 3D interval fabric are of a mesh structure, the middle of the 3D interval fabric is supported by the monofilaments, the fabric is stiff and smooth and has good air permeability, and in addition, the 3D interval fabric is vision-proof, non-transparent, comfortable to wear and suitable to make female casual fashion garments.

The above is only preferred embodiments of the present invention. Those skilled in the art can make various variations to the specific embodiments and the application range in accordance with the concept of the present invention. The contents of the description are not intended to limit the present invention. 

What is claimed is:
 1. A preparation method for a warp-knitted fabric of filament and short staple composite yarn, characterized by comprising the following specific process steps: A1, selecting chemical fiber filaments and short staples, and carrying out composite forming to the chemical fiber filaments and the short staples to form composite yarns, wherein the composite yarns are doubled and twisted threads of the chemical fiber filaments and the short staples or core spun yarns of the chemical fiber filaments and the short staples or siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on a spinning frame; A2, feeding the composite yarns into a warping machine for warping; A3, feeding the warped composite yarns into a warp knitting machine for warp-knitting weaving, and processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is a warp-knitted fabric greige or a 3D interval warp-knitted fabric greige; A4, dyeing and finishing the warp-knitted fabric greige; and A5, setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of a warp-knitted fabric.
 2. The preparation method for the warp-knitted fabric of filament and short staple composite yarn, characterized in that water-soluble Poly Vinyl Alcoho (PVA) filaments or soluble polyester filaments are used as chemical fiber filaments, and the specific process steps are as follows: A1, selecting the water-soluble PVA filaments or the soluble polyester filaments and the short staples, and carrying out composite forming to the water-soluble PVA filaments and the short staples to form composite yarns, wherein the composite yarns are the doubled and twisted threads of the chemical fiber filaments and the short staples or the core spun yarns of the chemical fiber filaments and the short staples or the siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on the spinning frame; A2, feeding the composite yarns into the warping machine for warping; A3, feeding the warped composite yarns into the warp knitting machine for warp-knitting weaving, and processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is the warp-knitted fabric greige or the 3D interval warp-knitted fabric greige; A4, for the warp-knitted fabric greige using the water-soluble PVA filaments as the chemical fiber filaments, placing the warp-knitted fabric greige into hot water to dissolve the soluble PVA filaments, and for the warp-knitted fabric greige using the soluble polyester filaments as the chemical fiber filaments, placing the warp-knitted fabric greige into alkaline solution to dissolve the soluble polyester filaments, wherein content of cotton and Poly Butylene Terephthalate (PBT) in the warp-knitted fabric greige is 67.2% and 32.8%, respectively, and the gram weight of the warp-knitted fabric greige is 240 g/m²; A5, dyeing and finishing the warp-knitted fabric greige subjected to dissolution processing; and A6, setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric.
 3. The preparation method for the warp-knitted fabric of filament and short staple composite yarn, characterized in that low-melting-point filaments are adopted as chemical fiber filaments, a filament and short staple composite yarn warp-knitted fabric is a fabric capable of being randomly cut and knitted, and the specific process steps are as follows: A1, selecting the low-melting-point filaments and the short staples, and carrying out composite forming to the low-melting-point filaments and the short staples to form composite yarns, wherein the composite yarns are the doubled and twisted threads of the chemical fiber filaments and the short staples or the core spun yarns of the chemical fiber filaments and the short staples or the siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on the spinning frame; A2, feeding the composite yarns into the warping machine for warping; A3, feeding the warped composite yarns into the warp knitting machine for warp-knitting weaving, processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is the warp-knitted fabric greige or the 3D interval warp-knitted fabric greige; A4, dyeing and finishing the warp-knitted fabric greige; and A5, heat-setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric.
 4. The preparation method for the warp-knitted fabric of filament and short staple composite yarn according to claim 1, characterized in that the chemical fiber filaments are natural fiber silk, rayon adhesive filaments, synthetic polyester filaments or synthetic polyamide filaments.
 5. The preparation method for the warp-knitted fabric of filament and short staple composite yarn according to claim 1, characterized in that the short staples are natural short staples or chemical short staples.
 6. A warp-knitted fabric of filament and short staple composite yarn, characterized by being prepared according to the preparation method according to any one of claims 1 to
 5. 